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# How do I calculate the following sum. I am in grade 5. ? x 1/3=10

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Divide each side of equation by 1/3. This will leave you with ?x1=10 divided by 1/3. When you divide with a fraction you have to invert it which gives you 10x3/1=10x3. This leaves you with ?=10x3. ?=30. Proof: 30x1/3=10. Hope this helped.

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